<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <select name="" id="hh" index="123">
    <option value="1">123</option>
    <option value="2">456</option>
  </select>

  <script>
    hh.addEventListener('click', (e) => {
      console.log(e.target.innerHTML);
    })
  </script>
</body>

</html>